30results about How to "Reduced bearing strength" patented technology

A bottom bracket assembly for a bicycle is comprised of a spindle and at least two cartridge bearings. The inner races of the cartridge bearings are axially fixed on the spindle by abutting stop elements. Crank arms attached to the ends of the spindle axially abut the outer stop elements, thus ensuring the precise and consistent axial location of the crank arms. Since the inner bearing races are fixed axially, the outer race of at least one cartridge bearing may be allowed to float in an axial direction to ensure proper alignment of the inner and outer races and the greatest possible bearing life for the bottom bracket.

The invention belongs to the field of machinery, and relates to a hydraulic drive, gas drive or solid flowing pressure drive device and equipment, particularly to a method for utilizing rolling friction to centralize a piston rod to do reciprocating motion and an actuating device for utilizing rolling friction to centralize the piston rod to do reciprocating motion through implementing the method. The actuating device comprises a piston rod, a cylinder body, a controlling piece and a centralizer, wherein the piston rod comprises a piston and a cylinder rod; the centralizer comprises a guiding rolling element and a guiding rolling element supporting piece; the guiding rolling element is arranged between the guiding rolling element supporting piece and the cylinder rod; the controlling piece controls flow of liquid, gas or solid; the piston drives the cylinder rod to do reciprocating motion; and the guiding rolling element fits the guiding rolling element supporting piece and the cylinder rod to rotate and centralizes the motion direction of the cylinder rod through the rolling friction.

The invention relates to a large-axle-load railway vehicle bogie which comprises a framework. The framework is composed of side beams, a cross beam, an auxiliary beam, two wheel pairs, a primary suspension device, a secondary suspension, a traction device, a foundation brake device, a traction motor and a gearbox. The primary suspension device is composed of a steel spring and a rotating arm shaft box, and the rotating arm shaft box is connected with the framework through the steel spring. The wheel pairs comprise wheel shafts and wheels fixed at the two ends of each wheel shaft, and the wheel shafts are connected with the rotating arm shaft box. The secondary suspension device comprises an air spring, a side-rolling preventing torsion bar and a height control device which all are arranged on the framework. The height of side beam vertical plates and the outer radius and the thickness of the cross beam are increased, the overall bending strength and the torsional strength of the bogie are greatly improved, the load bearing ability of a motor lifting seat and a gearbox lifting seat is greatly improved, the vertical load bearing ability of the side beams is greatly improved, and 17 tons of axle load can be met.

An electric motor includes a rotor shaft arranged in a casing and having an axial hollow bore formed therethrough for passage of lubricating oil, a rotor, a stator, a pair of bearings each having an inner race and an outer race, a pair of bearing fixing parts supporting the rotation of the rotor shaft, and bearing cooling devices each having a cylindrical heat dissipation portion fixedly secured to the rotor shaft so as to be in contact with either one of end faces of the individual inner races, the heat dissipation portion extending from the one end face of each inner race to a side opposite to the bearings. A pair of spaces between rotor-side end faces of the bearings and the bearing fixing parts, respectively, are in communication with ring gaps between the heat dissipation portions and the rotor shaft, respectively, through radial communication holes in the rotor shaft.

A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portion, the circular cross-section is flattened to form an at least approximately planar abutment portion, beyond which a circular cross-sectional portion is retained. The abutment portion is provided for fixing the tubular handle to the implement.

The invention discloses a structural stability enhancing floating wind turbine foundation. The structural stability enhancing floating wind turbine foundation comprises a floating plate, a middle column, steel supports, tree shock absorbing buoys and a damping pendulum, wherein the central column is arranged in the center of a triangular structure formed by the three shock absorbing buoys, the above of the central column is provided with the floating plate, and the top of the floating plate is provided with a wind turbine; every shock absorbing buoy is composed of, sequentially from top to bottom, an equipment cabin, a ballast tank and a heaving plate, the equipment cabin serves as the mechanical storage chambers of power generation of the wind turbine, the ballast tank enables the buoyantcenter of the overall structure to be higher than the center of gravity through ballast, and the heaving plate is used for greatly reducing structural heaving response; steel supports are connected between every two shock absorbing buoys as well as between every shock absorbing buoy and the central column; the lower ends of the three shock absorbing buoys are all connected to the damping pendulum. The structural stability enhancing floating wind turbine foundation is connected to the seafloor through a tension type mooring system, and the tension type mooring system is composed of a lower anchoring end and an upper mooring cable. The structural stability enhancing floating wind turbine foundation can resist complex marine cyclic dynamic load to maintain long-term stability of an upper wind turbine tower.

The invention discloses an air-cooled liquid-cooled combined radiating device, relates to a radiator and solves the technical problem that the conventional radiator has larger dimension and heavier weight in order to achieve a better radiating effect. The device comprises a shell connected with a heating body, and is characterized in that: the shell has an interlayer structure of inner and outer radiating cavities; one end of each radiating cavity is open; radiating liquid is accommodated in one of the inner and outer radiating cavities and an airflow channel is formed in the other of the inner and outer radiating cavities; and a sealing cover covers an accommodating cavity of the radiating liquid. By the air-cooled liquid-cooled combined radiating device, due to the interlayer structure, an airflow radiating channel is formed in one radiating cavity, a liquid radiating cavity is formed in the other radiating cavity, gas heat dissipation and liquid heat dissipation are better combined together, a radiating effect is guaranteed, the radiator is light in self weight and convenient to install and transport, and the bearing strength of a bracket for bearing the radiator can be reduced.

A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portion, the circular cross-section is flattened to form an at least approximately planar abutment portion, beyond which a circular cross-sectional portion is retained. The abutment portion is provided for fixing the tubular handle to the implement.

The invention provides an emitter splicing method of drip irrigation pipe, including drip irrigation pipe and emitter materials provision and emitter splicing, its character: the formula for the emitter material, high pressure polythene : low pressure polythene : medium density polythene = 2: 6 : 2, the formula for pipe blank, high pressure polythene : linear polythene : low pressure polythene = 2 : 6 : 2, the melt index of the emitter and pipe blank materials is 6-8, the temperature of nose and mouth mould is 190-200 deg.C and the splicing strength is high and stable. It is applied to splicing various inserted and sheet emitters of drip irrigation pipe.

The invention discloses a limit wheel which comprises a base 1, a pin roll 2, double row cylindrical roller bearings 3 and a roller 4, wherein the base comprises a bottom plate 11, a lower support plate 12 and an upper support plate 13; the pin roll 2 penetrates through holes in the lower support plate 12 and the upper support plate 13, the double row cylindrical roller bearings 3 are sleeved on a part of the pin roll 2, which is positioned between the lower support plate 12 and the upper support plate 13, the roller 4 is sleeved on the double row cylindrical roller bearings 3, and a circle of annular groove 41 used for containing a cylinder body and provided with a slope end face is arranged in the outer circumference surface of the roller 4. The limit wheel disclosed by the invention is capable of absorbing radial jump generated by the cylinder body due to blocked axial movement, ensures that V-shaped grooves on a butting part of the cylinder body are always in the same axial position, and is especially suitable for the condition of large axial float displacement of the cylinder body.

A wear resistant bearing of a motor-type fuel pump includes a sintered body of compacted powders having a blended composition which is composed of 1 to 5% of graphite, 2 to 9% of Cu—P alloy containing 5 to 10% of P, Cu—Ni alloy containing 21 to 26% of Ni, and the balance, in % by weight. The sintered body made of a Cu—Ni based sintering metal has a structure in which pores are dispersed on a basis material of Cu—Ni alloy particles at a porosity within a range of 8 to 18%, and P components and free graphite are distributed on a boundary between the Cu—Ni alloy particles and in the pores, respectively.

The invention discloses a commercial wheel-edge reducer shell for installation of an integrated brake caliper brake disc. The commercial wheel-edge reducer shell is formed by connecting a first shelland a second shell hermetically. The first shell comprises a web plate and a supporting boss arranged on the web plate. The first shell further comprises a barrel, wherein one end of the barrel is connected with the supporting boss, a flange surface is arranged on the end surface of the other end of the barrel, and the web plate, the supporting boss and the barrel are integrally formed to form a first cavity. A first rib connected to the web plate is arranged on the outer wall of the supporting boss, and a second rib connected to the supporting boss is arranged on the outer wall of the barrel.One end of a second shell is hermetically connected with the web plate to form a second cavity, a brake transmission shaft fixing flange surface and an installation boss for installing the brake caliper brake disc are arranged on the end surface of the other end of the second shell, and a power transmission shaft fixing flange surface and a third rib are arranged on the side wall of the second shell. The commercial wheel-edge reducer shell has the advantages of compact structure, simple modeling, increased bearing strength of the shell, small size and light weight.

The invention provides a special connecting and fixing construction member for constructing the wall surface of a stone panel, comprising an illustration body, a bearing seat and an L-type fixed plate, wherein a locating pin is outward convexly arranged at the center of the edge face of a free end on the lower board in the illustration body and is fixed on the back close to the hemline surface of the stone panel, and the horizontal board of the bearing seat is penetratively provided with a locating hole which is fixed on the back close to the hemline surface of the stone panel. When the connecting and fixing construction member is utilized to construct the wall surface of the stone plate, the illustration body on the stone panel at an upper position is directly inserted into the locating hole on the horizontal board in the bearing seat on the stone panel at a lower position by virtue of the locating pin, thus the whole plane supporting stress state can be rapidly achieved between an upper stone panel and a lower stone panel by close superposition, and the constructed wall surface of the stone panel has higher shock resistance and higher earthquake resistance capability.

The invention relates to an installation structure of a wheel disc brake and a bogie employing the installation structure. The installation structure comprises wheel disc brakes, a frame, and a wheel set connected with the frame, the frame comprises side beams at two sides and a crossbeam for fixing the side beams at the two sides, two sides of wheels of the wheel set are provided with brake discs, the wheel disc brakes are provided with a front suspension device and a rear suspension device, the side beams are provided with installing seats, and the front suspension device and the rear suspension device are suspended and fixed on the installing seats. According to the installation structure, larger brake heat can be born, the installation structure is fixed on the side beams in a hinged suspension manner, the movement of the brakes is not influenced, the bearing intensity of the crossbeam is reduced, the internal structure of the bogie is more reasonable, the structure is compact, and the installation of the brakes is facilitated; besides, a rear installing seat employs a hollow round steel tube so that the weight of the rear installing seat is reduced, and the stress of vertical plates of the side beams can be reduced.

The invention discloses a feedstock conveying device of a stainless steel solid melting furnace. The feedstock conveying device comprises the solid melting furnace, wherein a feedstock conveying device is arranged at one side of a material inlet of the solid melting furnace and comprises a conveying frame, rolling shafts, a motor, first rolling shaft gears and second rolling shaft gears; an inner gear and an outer gear are fixedly arranged on an output shaft of the motor; two ends of each rolling shaft are provided with pedestal bearings rotatably fixed at two sides of the conveying frame; each first rolling shaft gear and each second rolling shaft gear are arranged in front of and behind one end of each rolling shaft along the axial direction; the inner gear and the outer gear of the motor are respectively connected with one of the second rolling shaft gears and one of the first rolling shaft gears through chains in an intersection manner; the residual first rolling shaft gears and the residual second rolling shaft gears are respectively connected with each other two by two through the chains. The feedstock conveying device has the beneficial effects that stainless steel tubes can be steadily conveyed into the stainless steel solid melting furnace, the working efficiency is improved, and the production cost of an enterprise is reduced.

The invention relates to a multistage gas gun anti-recoil device and belongs to the technical field of mechanical machining. The multistage gas gun anti-recoil device comprises a cylinder block I (1),a cylinder block II (3), a buffer rod (5), a gas injection valve (6) and a balance valve (7). The cylinder block I is fixedly connected with a gun piece. The cylinder block II is fixedly connected tothe cylinder block I. One end of the buffer rod is movably connected with the cylinder block II. One end of the buffer rod is connected with the gun piece. Cavities of the cylinder block I and the cylinder block II are filled up with gas at different pressures through the gas injection valve. The cavities communicate through the balance valve. At different stages of the gas gun shooting process,the pressures of the cavities are adjusted through the balance valve to implement buffering on recoil force and forward impact force. Compared with the prior art, the multistage gas gun anti-recoil device can accurately return zero to shifting generated under different working conditions within short time in the gas gun shooting process, gently absorb peak stress generated in different stress directions and reduce the requirements for rigidity and strength and the foundation load bearing strength, is simple in structure and achieves the combined operation effect of multiple recoil mechanisms and counter-recoil mechanisms of an original gas gun.

The invention provides a microwave heating adsorption and desorption tank for environmental protection treatment of VOCs. The microwave heating adsorption and desorption tank comprises a tank body, adsorbent bed layers and microwave heaters, wherein a waste gas inlet is formed in the side wall, close to the bottom end, of the tank body; a waste gas outlet is formed in the top end of the tank body;an upper steam outlet and a lower steam outlet are formed in the side wall of the tank body; valves are respectively arranged on the waste gas inlet, the waste gas outlet, the upper steam outlet andthe lower steam outlet; the microwave heaters are uniformly distributed on the outer wall of the tank body to form a microwave heating system; the tank body is internally provided with a plurality ofadsorbent bed layers; the waste gas inlet is positioned on the upstream of the absorbent bed layers. According to the microwave heating adsorption and desorption tank provided by the invention, adsorbed VOCs can be treated by combining reduced pressure desorption with microwave heating; the desorption effect is better, an adsorbent is protected more easily and the service life of the adsorbent isprolonged.

The invention discloses a long-shaft molten salt pump which comprises a motor frame, a bearing box, a bearing box bracket, a water outlet seat, a mounting bottom plate, a connecting pipe, a pump section and a water inlet and is characterized in that the pump section is divided into a first-stage pump section and a second-stage pump section; the first-stage pump section is arranged at the lower endof the pump shaft; the lower part of the first-stage pump section is connected with the water inlet; the secondary pump section is arranged below the mounting bottom plate; the first-stage pump section is internally provided with a group of impellers and guide blades; and the secondary pump section is internally provided with four groups of impellers and guide blades. With the structure, the existing structural form that the pump section is arranged at the lower end of the pump shaft is improved into a structural form that the secondary pump section is arranged below the mounting bottom plate, and mass distribution of the pump and a stress point of an unbalanced force are changed, so that reasonable mass distribution and unbalanced stress point are realized, and improvement on operation stability of the long-shaft molten salt pump is realized.

A novel sandwich structure composite sleeper and a continuous pultrusion molding process thereof aim at the defects of larger density and smaller die cavity size of a composite sleeper. For solving the technical problems, the composite sleeper is realized by adopting the following technical scheme: the novel sandwich structure composite sleeper is characterized that the composite sleeper has a sandwich structure; the outer layer of the composite sleeper is of a continuous fiber-enhanced polyurethane foam layer with the thickness of 10-50mm; the interior of the composite sleeper is of a foam core material; the cross section of the foam core material is square or rectangle with round angels chamfered at four corners; the material of the foam core material is one from polyurethane foam, polyvinyl chloride foam and phenolic foam, and the density of the material is 100-500kg / m<3>. The continuous molding process for the composite sleeper comprises six procedures of yarn guiding, conveying of the foam core material, glue injecting of a foaming machine, uniform dipping, molding and cutting. The technology has the advantages of small density, large bearing strength, simple and convenient procedures, high cost performance and the like.

The invention discloses an outdoor movable blind window capable of resisting typhoon and a drive method for blinds of the outdoor movable blind window. The outdoor movable blind window capable of resisting typhoon comprises a plurality of blinds with rotary shafts, and further comprises a hinge mechanism formed by connecting a plurality of hinges, wherein the rotary shaft of each blind is connected to the hinge mechanism. The invention further provides a drive method for the blinds of the outdoor movable blind window capable of resisting typhoon, wherein the outdoor movable blind window capable of resisting typhoon comprises the plurality of blinds with the rotary shafts; and the drive method comprises the following steps of: connecting the rotary shafts of the blinds to the hinge mechanism, and realizing translation and / or rotation for the blinds by driving the hinge group. The outdoor movable blind window capable of resisting typhoon disclosed by the invention has prominent wind-resisting performance, operation and control performance, endurance performance and burglarproof performance, can be adaptive to bad meteorological environments such as typhoon and sand, and has a service life of being up to more than 25 years.

The invention relates to a long rubber sleeve. The problem that an existing long rubber sleeve packer is large in deblocking difficulty is mainly solved. The rubber sleeve is characterized in that a rubber sleeve main body (1) is internally provided with a liner tube (3), the two ends of the liner tube (3) are sulfuration heads (4), and the sulfuration heads (4) and the liner tube (3) bear pressure on the whole. The invention further provides a rubber formula of the long rubber sleeve, and the formula comprises the following components of, by weight, 92-95% of butadiene-acrylonitrile rubber and 5-8% of a chloroprene rubber adhesive in proportion. The long rubber sleeve is good in elasticity and durability and capable of improving the deblocking property of a long rubber sleeve packer.

The invention discloses a rebar arrangement method of buildings. The rebar arrangement method includes following steps: (1), setting up a pouring formwork; (2), arranging rebars; (3), bending main rebars; (4), arranging anti-shear rebars. A mode of arranging rebars in a bow-shaped manner, so that integral structure firmness can be improved, anti-seismic effect is good, bending resistance is high, and rebar consumption can be reduced.